Shuttle binder



Aug. 11, 1959 J. M. BUDZYNA A I SHUTTLE BINDER 2 Sheets-Sheet 1 FiledOct. 12, 1955 h n m u m IN V-EN TOR. JOSEPH M. BUDZYNA BY %f VZ /M%ATTORNEY g- 11, 1959 J. M. BUDZY NAI 2,898,946

SHUTTLE'BINDER Filed 001;. 12, 1955 v 2 Sheets-Sheet 2 fig- INVENTOR.JOSEPH M. BuozYNA A TTORNE Y SHUTTLE BINDER Joseph Budzyna, EastDouglas, Mass., assignor -to Draper Corporation, Hopedale, Mass., acorporation of Maine Application October 12, 1955, Serial No. 540,110

8 Claims. (Cl.'139-186) This invention relates to improvements inshuttle binders for weaving looms.

It is a general object of the invention to improve the operation of theshuttle checking means of a loom especially to increase its precision ofoperation and efliciency at high speeds.

It is a more specific object to devise a binder which shall serve toabsorb the energy of the shuttle and arrest it in fully boxed position,and with which the entire surface of the binder shall affect a moreequally proportionate part of the retarding function.

It is a further object to devise a binder which may be adjusted towidely varying sizes of shuttles and to different speeds and conditionsof loom operation.

Other objects will become apparent from the following disclosure.

In fly shuttle looms the shuttle propelled to and fro across the lay ofthe loom is arrested at the end of each flight as it enters a shuttlebox by plural means which dissipate its residual kinetic energy, themajor one of which is called a shuttle check or binder. These means alldepend upon friction and, of course, are not entirely constant for allconditions. For example, changes in temperature of the parts, moistureand other factors influence their efiect and further, variations areintroduced by the picking means which may not impart to the shuttleexactly the same initial velocity at each pick as well as the fact themass of the shuttle, bobbin and filling change noticeably from full toempty condition. At higher speeds these factors become more difficult tocontrol or, at least, their effect becomes more noticeable causing theshuttle to box less precisely with the attendant end results so wellknown to those skilled in the art.

Shuttle binders (sometimes referred to as checks) usually comprise amovable member pivoted or otherwise restrained for limited movementwithin one or the other of :the box plates of a shuttle box. These arespring urged inwardly and are generally faced with leather or otherfrictional material against which the shuttle slides as it enters thebox.

According to the instant invention, a binder is so mounted for pivotalmovement and is so adjustable that it will present to an enteringshuttle a frictional, motion retarding surface Which is maintained in aposition to resist the entry of the shuttle into the box moreeffectively than heretofore. A binder faced with suitable material ispivoted on a lever having two arms, one of which constitutes a pivot atabout the outer third of the binder and the other arm of which carriesadjustable stop means. This lever is pivoted on the rigid box structureintermediate its ends and its pivot is adjustable laterally of the box.A spring in addition to the usual protector rod finger tends to urge theinner, free end of the binder in toward the shuttle and other springmeans bears against the outer end of the lever to maintain that end ofthe binder outwardly in contact with its stop.

The invention and its mode of operation will be more A ate 1 ice fullydescribed in the following, more detailed disclosure and by reference tothe figures of drawing, in which:

Fig. 1 is a plan view of a lay end-shuttle box assembly to which theinvention has been applied;

Fig. 2 is a rear elevation of the mechanism of Fig. 1;

Fig. 3 is a view similar to Fig. 1, but with the .rear box plateremoved;

Fig. 4 is an end view of Figs. 1 or 2, and

Fig. 5 is a sectional view showing details of the lever pivot.

Now referring to Figs. 1 and 2, only enough of a conventional, flyshuttle loom has been shown to illustrate the invention and the mannerin which it is applied. These parts of a loom comprise a lay endattached to a lay beam carried by swords one of which is shown at 11,the lay end including front box plate 12 and rear box plate 13. Theseare fixed to the lay end and beam by suitable screws or bolts and thefront plate is preferably faced with leather in the usual way. A shuttle14 carr-ies a filling supply on bobbin 15 as usual and is picked fromthe box to the opposite side of the lay by picking means acting throughpicker stick 16 and picker 17.

A check strap 18 threaded through fingers 19 on bracket 20 performs theusual function of checking the stick on its picking and return strokes.

Normally the rear box plate has pivoted adjacent its outer end a binderfaced with leather or other friction material and its pivot, thoughadjustable, is when once set, a relatively fixed point about which thebinder may swing. According to the invention here, a binder is pivoted,not at a single point, but rather on an arm of a lever which is itselfpivoted to swing limitedly. The binder is then spring pressed at itsinner or relatively free end to position to check the shuttle ratherseverely as it enters the box, but the multiple or compound pivot systemacts at that time in conjunction with the entering shuttle, to interposethe outer or heel end of the binder in the path of the shuttle so that avery appreciable amount of the shuttles energy may be absorbed duringthe last part of its travel or after its speed has been initiallyreduced.

Physically this mechanism is embodied as a binder 21 of wood or othermaterial faced with friction material 22, e.g., leather. The rear boxplate assembly includes a top rail 23 flared at 24 to act as a shuttlerestraining guide. This rail is attached by suitable connecting means 25and other bracket connections to plate 26 at itsv inner end while it isfurther formed with a curved extension 27 which is fixed to the plate 26by a bolt 28 and spacer sleeve 29. Actually, this bolt at its lower endpasses through an extension 30 from the plate 26.

This bolt and sleeve which is eccentric to the belt for purposes ofadjustment, serve as a pivot for a lever having arms 31 and 32. Thefirst is curved as shown and has a pin 33 fixed in its end which dependsinto a corresponding hole in the binder. The top of the binder is alsorecessed to a depth about the thickness of the arm end.

The arms 31 and 32 extend, one at either side of a hub 34 which isoscillatable on the sleeve 29, and arm 32 shaped as in Figs. 2 and 5,has threaded therethrough a stop screw or abutment 35 with looking nut36. A rounded head of the screw strikes against the outer end of thebinder for a purpose later to be described.

The sleeve 29 has a flange 37 at its lower end upon which the hub of thelever is carried and which is drilled at spaced points or otherwise soformed that the sleeve may be rotated when the bolt 28 is loosened,thereby to adjust the position of the pivot laterally of the shuttlebox.

Bracket 20, Figs. 2 and 4, extends upwardly at 38 to mount two springs.A multi-leaf spring 39 presses against the binder near its inner endand, in conjunction with the finger 40 and other protector rod parts,affects the 3 binder at that end to cause it to assume a position in theshuttle pathway and to resist its entry and progress into the box.

Another spring 41 bears lightly against a depending part of the arm 32to prevent the outer end of the binder from moving too far laterally aswill be explained in describing the operation of the parts.

These springs are fixed to bracket 38 by screws 42 and 43. A rib 44between the screws makes possible adjustment of spring tension as theymay be independently flexed about the rib to apply more or lesspressure.

The arm 31 may be varied by increasing or decreasing its length and inthat event, its pivot 33 will be located at diiferent distances from theends of the binder. Such possibilities are shown in dot-and-dash lines,Fig. 3. This provision is made to take care of shuttles of dilferentlengths and also makes it possible to apportion the amounts of shuttleretardation to be eflected by the inner and outer parts of the binder.For example, as the arm is lengthened the outer binder end movesinwardly later upon entry of the shuttle into the box and as the arm isshortened, the outer end of the binder swings laterally inwardly andalso slightly outwardly lengthwise of the lay more quickly. In thelatter case the outer part of the binder will do more of the work inabsorbing the shuttle energy.

In action, the parts being set as in Fig. 3, for example, the inner endof the binder would be resiliently held inwardly of the box by spring 39and protector rod finger 40. It is also freely pivoted at 33 and arm 31is free to pivot at sleeve 29, spring 41 acting at the time to hold thearm 32 inwardly with stop screw or abutment 35 more or less in contactwith the binder end. It is to be noted that arm 32 is considerablyshorter than arm 31 and spring 41 has only about enough strength to holdthat end of the lever inwardly and the binder laterally outwardly exceptas hereinafter described.

As the shuttle enters the box its tapered side strikes the rounded,inner binder surface first and two components of the force act, one toforce that end laterally outwardly of the box against the etfect ofspring 39 and finger 40, the other to move the whole binder more or lesslongitudinally of the box toward the end of the lay. This latter actioncan result only in a swinging of the arm 31 about sleeve 29 and, ofcourse, pivot 33 and the outer binder end move laterally inwardly, theend moving away from stop screw 35 since spring 41 has insuflicientforce to resist very effectively the tendency of arm 31 to be swung onsleeve 29.

The shuttle moving at a high velocity is checked some upon initialcontact with the binder and as it progresses into the box must wedge thebinder outwardly. That motion swings arm 31 on sleeve 29 while pivot 33swings both laterally outwardly of the box and has a slight componentalong the lay in direction opposite that in which the shuttle moves. Theresult is that instead of a situation where the major shuttle retardinginfluence takes place at the early part of its engagement with thebinder, here the retardation continues more or less uniformly from oneend to the other of the binder.

By varying the length of arm 31, spring pressures and the eccentricsleeve 29, the amount of energy absorbed at the initial and terminalends of the binder, that is, the curve of energy absorption as theshuttle progresses into the box, may be varied to obtain a verysatisfactory condition and to work the entire surface of the binderengaged by the shuttle. This is especially effective in looms operatingat high speeds and with larger shuttles and, of course, heavier fillingsupplies.

While one end only of the loom has been illustrated and described, it isto be understood that a substantial duplication of parts is to be foundat the opposite end and it would thus serve no useful purpose to showboth.

The adjustment of parts is easily effected since both springs areseparately tensioned and the eccentric bush- 4 ing and abutment screw 35may be very nicely set. Gauges may be used and practical shuttlechecking observed in eifecting a practical adjustment for a specificcondition.

While one embodiment of the invention has been disclosed, it is to beunderstood that the inventive concept may be carried out in a number ofways. This invention, therefore, not to be limited to the precisedetails described, but is intended to embrace all variations andmodifications thereof falling within the spirit of the invention and thescope of the claims.

I claim:

1. For a loom having a lay, a shuttle and a shuttle box including frontand rear box plates, a shuttle retarding means which comprises a shuttlebinder, a pivot at one of said box plates, and means for positioningsaid binder for receiving and retarding the shuttle as it enters the boxcomprising a lever hinged intermediate its ends at said pivot and havinga curved arm the end of which is pivoted to said binder, and anoppositely directed arm carrying an abutment directly engaging the outerend of said binder for limiting movement of the binder outwardlylaterally of the box.

2. For a loom having a lay, a shuttle and a shuttle box including frontand rear box plates, a shuttle retarding means which comprises a shuttlebinder, a pivot at one of said box plates, and means for positioningsaid binder for receiving and retarding the shuttle as it enters the boxcomprising a lever hinged intermediate its ends at said pivot and havinga curved arm the end of which is pivoted to said binder, and anoppositely directed arm carrying an abutment directly engaging the outerend of said binder for limiting movement of the binder outwardlylaterally of the box, and resilient means for urging the lever in adirection about its pivot to maintain the outer end of the binder in anoutermost position laterally of the box.

3. For a loom having a lay, a shuttle and a shuttle box including frontand rear box plates, a shuttle retarding means which comprises a shuttlebinder, a pivot at one of said box plates, and means for positioningsaid binder for receiving and retarding the shuttle as it enters the boxcomprising a lever hinged intermediate its ends at said pivot and havinga curved arm the end of which is pivoted to said binder, and anoppositely directed arm carrying an abutment for limiting movement ofthe binder outwardly laterally of the box, and spring means, one ofwhich urges the innermost end of the binder inwardly of the box tointerpose it in the path of an entering shuttle and a second of whichacts upon said lever to urge it in a direction to maintain the outer endof the binder in its outermost position laterally of the box.

4. For a loom having a lay, a shuttle and a shuttle box including frontand rear box plates, a shuttle retarding means which comprises a shuttlebinder extending substantially the length of the shuttle box, a pivot atone of said box plates, and means for positioning said binder forreceiving and retarding the shuttle as it enters the box comprising alever hinged intermediate its ends at said pivot, said lever having anarm directed inwardly of the loom and so angled that an end of thebinder pivoted at the free end of said arm and at a pivot adjacent theouter end of the binder, when swung inwardly of the box will have aslight component of motion longitudinally outwardly of the lay, and asecond arm for said lever and adjustable stop means carried thereby anddirectly engaged by the outer end of the binder to limit its lateralopening at and adjacent the outer end.

5. For a loom having a lay, a shuttle and a shuttle box including frontand rear box plates, a shuttle retarding means which comprises a shuttlebinder, a pivot at one of said box plates, and means for positioningsaid binder for receiving and retarding the shuttle as it enters the boxcomprising a lever hinged intermediate its ends at said pivot, saidlever having an arm directed inwardly of the loom and so angled that anend of the binder pivoted at the free end of said arm when swunginwardly of the box will have a slight component of motionlongitudinally outwardly of the lay, a second arm for said lever,adjustable stop means carried thereby and engaged by the outer end ofthe binder to limit its lateral opening at and adjacent the outer end,spring means to urge the inner end of said binder into the path of anentering shuttle, and a second spring for maintaining the outer end ofthe binder in engagement with said stop means, said second spring beingrelatively weak thereby to permit the outer portion of the binder tomove laterally inwardly upon initial engagement of a shuttle with thebinder.

6. For a loom having a lay, a shuttle and a shuttle box including frontand rear box plates, a shuttle retarding means which comprises a shuttlebinder extending substantially the length of the shuttle box, a pivot atone of said box plates, and means for positioning said binder forreceiving and retarding the shuttle as it enters the box comprising alever having a hub, one arm of said lever extending inwardly of the layand having a pivot at its free end to which said binder is freelypivoted at a point adjacent its outer end, a second arm extending in theopposite direction and, a stop screw threaded through said second armand having a head directly engaged by and limiting movement of the outerend of the binder laterally of the shuttle box.

7. For a loom having a lay, a shuttle and a shuttle box including frontand rear box plates, a shuttle retarding means which comprises a shuttlebinder, a pivot at one of said box plates, and means for positioningsaid binder for receiving and retarding the shuttle as it enters the boxcomprising a lever having a hub, one arm of said lever extendinginwardly of the lay and having a pivot at its free end to which saidbinder is freely pivoted, a second arm extending in the oppositedirection, a stop screw threaded through said second arm and having ahead limiting movement of the outer end of the binder laterally of theshuttle box, a relatively strong spring urging the inner end of thebinder into a position to engage and check an entering shuttle, and aweaker spring biasing the outer or second arm of the lever to a positionto hold that end of the binder open or outwardly laterally of the box.

8. Mechanism as defined in claim 7 wherein the pivot for the levercomprises an eccentric sleeve adjustable to vary the pivot positionlaterally of the shuttle box.

References Cited in the file of this patent UNITED STATES PATENTS1,068,823 Ryon July 29, 1913 1,487,093 Draper Mar. 18, 1924 2,341,843Hamilton Feb. 15, 1944 2,351,189 Brown June 13, 1944 2,763,295 BosticSept. 18, 1956

